Material Interchange and Heat Exchange Columns and Inserts Used for Mass Transfer Processes in Chemical and Industrial Plants; Filling and Packing Materials Therefore

Scientific apparatus and instruments in the nature of material exchange and heat exchange apparatuses and instruments

Parts, namely, structured packings for heat and material exchanging devices, namely, distillation columns, rectification columns, absorption columns, desorption columns and extraction columns

[ Chemical apparatus, namely industrial columns for substance and heat exchange ]